IOS 字典快速转换为Model 模型
一般情况下IOS得局部页面加载的过程是,创建一个Model然后,将Nib文件与Model进行关联,然后能够快速的获取到Nib文件上的控件实例。操作生成页面。
但是原生的内容是没有直接通过Json获取Model只能生成字典。然后转换为Model。下列方法就是通过字典来转换为Model的过程。
首先是要添加对应的使用的头文件#import <objc/runtime.h>
然后添加下面几个方法
Model从字典中填充数据
/* * 从字典中填充数据 */ -(int)reflectDataFromDictionary:(NSDictionary *)dic { unsigned int useCount ,outCount; Ivar *ivars = class_copyIvarList([self class], &outCount); for (const Ivar *p = ivars; p < ivars + outCount; p++) { Ivar const ivar = *p; //获取变量名 NSString *varName = [NSString stringWithUTF8String:ivar_getName(ivar)]; //获取变量值 id varValue = [self valueForKey:varName]; //如果是直接包含此名称的 if ([dic.allKeys containsObject:varName]) { varValue = [dic objectForKey:varName]; useCount++; }else{ NSString *tmp_varName = [self removeFirstUnderlined:varName]; if ([dic.allKeys containsObject:tmp_varName]) { varValue = [dic objectForKey:tmp_varName]; useCount++; } } [self setValue:varValue forKey:varName]; } return useCount; }
两个辅助方法
/* * 移除掉第一个下划线 */ -(NSString *)removeFirstUnderlined:(NSString *)str { if ([[str substringToIndex:1] isEqual:@"_"]) { return [str substringFromIndex:1]; } return str; } /* * 获取所有属性 */ - (NSArray*)propertyKeys { unsigned int outCount, i; objc_property_t *properties = class_copyPropertyList([self class], &outCount); NSMutableArray *keys = [[NSMutableArray alloc] initWithCapacity:outCount]; for (i = 0; i < outCount; i++) { objc_property_t property = properties[i]; NSString *propertyName = [[NSString alloc] initWithCString:property_getName(property) encoding:NSUTF8StringEncoding]; [keys addObject:propertyName]; } free(properties); return keys; }
将Model转换为字典
/* * 转换为字典 */ -(NSDictionary *)convertToDictionary { NSMutableDictionary *dic = [[NSMutableDictionary alloc] init]; for (NSString *key in [self propertyKeys]) { id propertyValue = [self valueForKey:key]; [dic setObject:propertyValue forKey:key]; } return dic; }
抽空写了一个Demo出来,GitHub死活上传不上去,所以放到CSDN上去了。如果需要的话可以Down下来看看http://download.csdn.net/detail/anxin1225/8190975
然后,就没有然后了……